Make titan-all use Hadoop 1 by default
Make titan-all use Hadoop 1 by default

This commit switches titan-all from a Hadoop 2 dependency to a Hadoop
1 dependency.  The downstream user can still override this with
dependency exclusions.  The point of this change is to make titan-all
play nicely with TP3 in the default configuration (since TP3 uses
Hadoop 1).

mbrukman/titan,pluradj/titan,graben1437/titan,mbrukman/titan,thinkaurelius/titan,englishtown/titan,graben1437/titan,banjiewen/titan,mbrukman/titan,banjiewen/titan,thinkaurelius/titan,elubow/titan,amcp/titan,dylanht/titan,englishtown/titan,elubow/titan,samanalysis/titan,amcp/titan,samanalysis/titan,pluradj/titan,samanalysis/titan,thinkaurelius/titan,dylanht/titan,dylanht/titan,amcp/titan,CYPP/titan,pluradj/titan,graben1437/titan,pluradj/titan,dylanht/titan,banjiewen/titan,banjiewen/titan,mbrukman/titan,graben1437/titan,CYPP/titan,elubow/titan,englishtown/titan,CYPP/titan,thinkaurelius/titan,CYPP/titan,samanalysis/titan,elubow/titan,mbrukman/titan,amcp/titan,englishtown/titan